Cyanophyceae: Nostocales: Oscillatoriaceae

Lyngbya
Agardh 1824

Family: Trichome (filamentous structure) lacks heterocysts; with equal diameter throughout whole length;
no hair-like structure; no branching.
Genus: A single trichome within a rigid sheath; sheath clear or yellowish; filaments planktonic or
agglutinated (Illustrations of The Japanese Fresh-water Algae, 1977).